GROB, H. <br/><br/>
INTERNATIONAL SYMPOSIUM ON UNDERGROUND OPENINGS 

 - 1ST ED. 
 - Países Bajos, Holanda  A. A. BALKEMA  1979 ROTHERHAM 
 - 573 
<br/><br/><label>ISBN: </label>9061910757 
<br/><br/><label>LCCN: </label>15673 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EXCAVACIONES SUBTERRANEAS
<br/><br/><label>Dewey Class. No.: </label>624.152